Main menu

Post navigation

For example, one recent fMRI study [38••] suggests that the hippo

For example, one recent fMRI study [38••] suggests that the hippocampus supports the transfer of monetary value across related experiences through additional recruitment of reward regions. The researchers Selleck Ribociclib showed greater reactivation of prior related knowledge during encoding

of new reward information for stimuli that showed more evidence of subsequent preference shifts, a behavioral index of value transfer. Hippocampal–striatal functional coupling was also associated with value-related preference changes [38••], suggesting that hippocampus may interact with domain-specific regions (e.g., striatum in value learning tasks) in service of integration. Consistent with a domain-general role for hippocampus in memory integration, rodent work [39] has found that the hippocampus was necessary for updating a known goal location with new value information. These updated memories may then be transferred to neocortex, as mPFC was necessary for retaining the updated Enzalutamide price knowledge to support performance on the next day [39]. Thus, integrated memories incorporating value information may be maintained as memory

models in mPFC that will later bias behavior. We note that this role for mPFC is likely also domain-general given its documented involvement in a number of tasks lacking an explicit value component. Recent attention has focused on the behavioral benefits conferred by memory schema. For instance, research in rodents has shown that prior knowledge of a spatial layout (i.e., a spatial schema) can both facilitate acquisition of new related memories and speed their consolidation 40 and 41. Echoing these results, a number of human studies have reported behavioral benefits in learning and memory when new information can be incorporated into an existing schema 42•, 43 and 44. Application of a schema to a new PRKACG scenario has also been shown to recruit hippocampus 45 and 46. For example, one fMRI study [46] found that while engagement and connectivity of hippocampus and ventral mPFC was enhanced during generation of a task schema, the application of schema to guide behavior

in a novel but similarly structured task selectively recruited hippocampus. Rodent [41] and human 26, 42• and 43 work further suggests that mPFC may be activated along with hippocampus during learning of schema-related information. Recent empirical data indicate that one factor that may influence the relative engagement of MTL and mPFC is the degree of consistency between new information and existing schema. Specifically, one study [42•] demonstrated that mPFC engagement was more predictive of subsequent memory for information congruent with existing schema, perhaps reflecting direct encoding1 of new content into prior knowledge. By contrast, MTL engagement was more predictive of successful encoding of incongruent information.